Wiltshire's Roger East will take charge of the Royals for the second time in a matter of weeks when he blows the whistle at Anfield on Saturday.
Mr East was also in charge of the 3-2 win at QPR in the League Cup, where he awarded the Royals a penalty while giving out bookings to Jimmy Kebe and Hal Robson-Kanu.
In all he's handed out 38 yellow cards while sending off Swansea's Chico and West Brom's Peter Odemwingie.